Platyhelminthes can live without a circulatory or respiratory system because
A) they rely on their digestive system.
B) they are dorsoventrally flattened.
C) the kidney excretes excess waste materials.
D) the epidermis secretes lubricants.
Correct Answer:
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Q6: All animals
A)eat other animals.
B)are multicellular.
C)reproduce sexually.
D)are triploblastic.
Q7: Which of the following is a parasitic
Q8: The most ancient deuterostomes are
A)annelids.
B)echinoderms.
C)mollusks.
D)arthropods.
Q9: Which of the following characteristics would be
Q10: Which of the following pairs is correctly
Q12: If multicellular organisms have distinct cell types,this
Q13: The three cell types found in sponges
Q14: Which of the following characteristics apply to
Q15: In fungi and plants
A)the cell wall controls
Q16: One key advantage associated with bilateral symmetry
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